Operation CHARM
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Ford
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1991
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Ranger 2WD L4-140 2.3L SOHC
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Pinpoint Tests
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DC - Mass Air Flow (MAF) Sensor
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DC20 - DC21
DC20 - DC21
EEC-IV Pinpoint Test:
